// Copyright 2012 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Transport for request that need an API key
// This is meant to be used like this:
//     t := &galleryplus.Transport{ApiKey: config.key,
//         http.RoundTripper: http.DefaultTransport}
//     client := &http.Client{Transport: t}

package galleryplus

import (
	"net/http"
)

type Transport struct {
	ApiKey string
	http.RoundTripper
}

func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
	u := req.URL
	args := u.Query()
	args.Set("key", t.ApiKey)
	u.RawQuery = args.Encode()
	r, _ := http.NewRequest(req.Method, u.String(), req.Body)
	return t.RoundTripper.RoundTrip(r)
}
